Command Injection in Cisco Small Business RV Series Routers
| Risk | Low |
| Patch available | NO |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-40120 |
| CWE-ID | CWE-77 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Cisco RV016 Multi-WAN VPN Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco RV042 Dual WAN VPN Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco RV042G Dual Gigabit WAN VPN Router Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco RV082 Dual WAN VPN Router Hardware solutions / Routers & switches, VoIP, GSM, etc Small Business RV320 Dual Gigabit WAN VPN Router Hardware solutions / Routers & switches, VoIP, GSM, etc Small Business RV325 Dual Gigabit WAN VPN Router Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Command Injection
EUVDB-ID: #VU57956
Risk: Low
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-40120
CWE-ID:
CWE-77 - Command injection
Exploit availability: No
DescriptionThe vulnerability allows a remote user to execute arbitrary commands on the target system.
The vulnerability exists due to improper input validation in the web-based management interface. A remote administrator can pass specially crafted data to the application and execute arbitrary commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsCisco RV016 Multi-WAN VPN Router: All versions
Cisco RV042 Dual WAN VPN Router: All versions
Cisco RV042G Dual Gigabit WAN VPN Router: All versions
Cisco RV082 Dual WAN VPN Router: All versions
Small Business RV320 Dual Gigabit WAN VPN Router: All versions
Small Business RV325 Dual Gigabit WAN VPN Router: All versions
CPE2.3- cpe:2.3:h:cisco_systems:cisco_rv016_multi-wan_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_rv042_dual_wan_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_rv042g_dual_gigabit_wan_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:cisco_rv082_dual_wan_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:small_business_rv320_dual_gigabit_wan_vpn_router:*:*:*:*:*:*:*:*
- cpe:2.3:h:cisco_systems:small_business_rv325_dual_gigabit_wan_vpn_router:*:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
